20.1 Faraday's Law and Lenz's Law

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Faraday’s Law and Lenz’s Law

MAGNETIC FLUX, FARADAY’S LAW & LENZ’S LAW
Magnetic Flux ɸB = B A = B A cosθ

B = magnetic field
A = area of loop
θ = angle between B and the normal of the loop
B
= component of B perpendicular to the loop
Faraday’s Law ε = -N ΔɸB / Δt          N = number of loops
Lenz’s Law The direction of the induced current results in a magnetic flux that opposes the change in the magnetic flux.
Motional Emf ΔV = B l v